Home / 18,299.11-25,252.56-9,915.61

Finding the Fourth Proportional to 18,299.11, 25,252.56 and 9,915.61

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Solution

The fourth proportional to 18,299.11, 25,252.56 and 9,915.61 is: 13,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.11 : 25,252.56 = 9,915.61 : x
  2. Step 2: Convert to fraction form
    18,299.11/25,252.56 = 9,915.61/x
  3. Step 3: Cross multiply
    18,299.11x = 25,252.56 × 9,915.61
  4. Step 4: Simplify right side
    18,299.11x = 250,394,449.66
  5. Step 5: Solve for x
    x = 250,394,449.66/18,299.11
  6. Step 6: Final answer
    x = 13,683.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.